有理数(-29/8)+(+49/12)+[(-5/6)+(21/8)+(1+23/12)]

问题描述:

有理数(-29/8)+(+49/12)+[(-5/6)+(21/8)+(1+23/12)]

(-29/8)+(+49/12)+[(-5/6)+(21/8)+(1+23/12)]
=(-29/8+21/8)+(+49/12+23/12)+[(-5/6)+1]
=-1+6+1/6=31/6